Dr. William Fay DDS
About this NPIWhat this record shows.
NPI 1841351376 is registered to Dr. William Fay DDS, a Orthodontics and Dentofacial Orthopedics Dentistry practising at 3501 Fillmore St Apt 301 in San Francisco, California. Orthodontics and Dentofacial Orthopedics Dentistry is a recognised medical specialty under the National Uniform Claim Committee (NUCC) taxonomy. Dr. William Fay DDS has been enumerated in the National Provider Identifier (NPI) registry since 2006.
Your brand here.
Medicare enrollment
This provider holds a Medicare enrollment on file with the Provider Enrollment, Chain and Ownership System (PECOS). Each enrollment carries a public Medicare Enrollment ID (ENRLMT_ID) used by billers and intermediaries.
Order and Referring Only
- I20231024002418DentistCA
Source: CMS PECOS public enrollment file.
Insurance & acceptsHow to confirm coverage.
The National Plan and Provider Enumeration System (NPPES) registry does not include commercial insurance network data, so we cannot show which plans Dr. William Fay DDS accepts. To confirm in-network status with your specific health plan, contact Dr. William Fay DDS directly at (415) 994-1188.
Frequently asked
Yes. NPI 1841351376 is registered as Active in the CMS NPPES public registry and passes the Luhn check-digit validation that all 10-digit NPIs use.
Orthodontics and Dentofacial Orthopedics Dentistry is a recognised medical specialty under the National Uniform Claim Committee (NUCC) taxonomy.
The CMS NPPES Public Registry at npiregistry.cms.hhs.gov is the authoritative source. FindMyNPI mirrors this dataset and refreshes monthly. For real-time verification, you can also call the provider's office at (415) 994-1188.
An individual healthcare provider has a single Type-1 NPI for life. Organisations can hold separate Type-2 NPIs per location, specialty, or sub-entity. Dr. William Fay DDS is a Type-1 individual NPI.